Of course not. Who is going to cut him a check if he develops CTE or other cognitive issues later in life?
But
researchers have for years posited that the more hits to the head a player receives — even subconcussive ones, which are usually not tracked — the more likely he is to develop cognitive and neurological problems later in life.
A new study published on Tuesday in the scientific journal Nature Communications added a critical wrinkle: A football player’s chances of developing chronic traumatic encephalopathy, or C.T.E., are related to the number of head impacts absorbed, but also to the cumulative impact of all those hits.
Of the 631 brains examined, 451 players, or 71 percent, were found to have C.T.E., while 180 did not. The players who were estimated to have absorbed the greatest cumulative force had the worst forms of C.T.E., which has been associated with symptoms including memory loss, impulsive behavior, depression and suicidal thoughts.
Eric Nauman, a biomedical engineering professor at the University of Cincinnati who was not involved in the study, said the results strengthened the idea that an accumulation of subconcussive hits, rather than concussions, was the driving force behind long-term cognitive decline.